Convective heating tray



FIG. 1 is a perspective view of a convective heating tray showing our new design.

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and;

FIG. 4 is a cross-sectional view thereof on an enlarged scale taken along line 4--4 of FIG. 2. 

The ornamental design for a convective heating tray, as shown and described. 